Submarine signaling.



PATENTED AUG. 30, 1904.

J. B. MILLET. SUBMARINE SIGNALING.

APPLICATION FILED JULY 20, 1903.

NO MODEL.

ITPJEESE E: 1,. 1 H

LgETUF? 7 Uniran Sra'rns Patented August so, 1904,

PATENT (Enr ca.

sueiunsina SIGNALBNG.

SPECIFICATION forming part of Betters Patent No; 769,100, dated August 30, 1904.

Application filed July 20, 1903.

To all whmn it may concern.-

Be it known that I, JOSIAH BYRAM MrLLn'r, a citizen of the United States,residing at- Boston,

in the county of Suffolk and State of Massa- The invention comprises means whereby a vessel may be employed to indicate. its position and direction of movement to an observer at some distance away.

It consists in combining with the vessel two devices or instruments for creating sound impulses or waves, so located in the vessel as to communicate such impulses or waves to the water surrounding the vessel and in a manner to permit thewater to conduct such, sound impulses or waves, and also in amanner to' permit the vessel or a portion of. itto operate to vary thevalue of the sound-waves, so that the observer may be able to discern by the differences in value of the sound-waves received through the water by him which side or part of the vessel is turned or points toward him and in whatdirection the vessel is mov: ing from the time when the signals are first received by him. -I prefer to employ for creating 'soundimpulses bells adapted when struck to deliver a note the fundamental of which shall be sharp in pitch, as I believe notes havinghigh vibration communicate to the water more effective sound-waves than those of relatively low vibration. I prefer also that the smind-prodncing devices be placed opposite each other in the boat and preferably near the bow thereof in order that a movement of the boat shall form the sound-shadow which is the means by which the, differences in values of the dif fercnt devices is caused.

I will now describe the invention in con-' junction with the drawings forming a part of this specification, wherein Figure l is a diagrammatic view representing three positions of the ship with respect to an observer, the'signaling devices being represented in the bow of the ship. Fig. 2 is U:

erialNo. 166,252. on; model.

view showing three positions of the ship, the signalingfldevices being shown in the stern of the ship. Fig. 3 a view showing two positions of the ship and the use ofone signaling device near the bow.

Referring to the drawings, A represents the vessel.

B represents one of the devices for producing sou nd-signals in the water mounted therein at one side thereof, preferably near the stern, and B represents the other means for producing sou rid-signals in the water mounted upon the other side thereof, preferably oppo--' cation of the sound )r nlucing devices in the vessel which will enable the resultsof the invention to be attainedmay be substituted for the one shown and described. Even onc'sigrial-producing device will answer when it is so located that the vessel itself may be used as a m ans of piioducing a sound-shadow on its souinl-v.'a\-'es for thepurpose of varying to the observerthe effect or value thereof.

i do not limit the invention to the employment as a means for producing sound-signals .of a hell, but may use any instrument-ality which is-capable ol' prodncing sound-vibra tions adapted to be transmitted by water and tobe carried by a vessel. Neither do .i conline myself to the number-of devices for producing sound-signals employed in the ship or to their" location with respect to the sides of the ship,so'long as the ship itselfis used as a means for determining the respective values of the sound-signala 7 Ilavingthus fully described 'my invention, 1 claim and desire to secure by Letters Patent of the United States i l. The method of communicatinginformation as to the positionor direction of a moving vessel to an observer removed from the I of the sound waves or Vibrations from such and the turning of the vessel for vessel, consisting of the employment of the vessel itselfvin connection withdevices-upon- I the vessel for produc ng sound vlbrationsor Waves in the water surrounding the vessel, varying the degree or value of said sound waves or vibrations in a given direction.

2. In a method of communicating information as to the position or direction of a mov- '1ng vessel to an observer removed from the vessel, the employment upon the vessel of two devices for producing sound waves or vibrations in the water surrounding the vesselhand the turning of the vessel to eause the same to 'act as a sound-reflector for varying the relative values or intensities i na given direction,

devices.

3. The method of communicatinginformation as to the position or direction of the moving vessel to an observer removed from the vessel, consisting of the employment of the vessel itself, in connection with a device located toward the end of the vessel for pro- Waves in the water duclng sound vibrations or surrounding the vessel,and the turning of the vesseli'or varying the degree of value of said sound waves orvibrations in a given direction.

JOSIAH BYRAM MILLET. In presence of J. DOLAN, SAUL SIPPERSTEIN. 

